I bought one of these a few years ago and it has proven to be vigorous and easy to care for. My issue is it is always listed as everblooming. Mine has one huge flush in spring and then no blooms. I do have some blooms now but this is the first time. All summer it was without flowers. Any ideas why mine is not acting as everblooming. I do water regularly and the soil is pretty fertile. I haven't fertilized much yet as the bed was new and loaded with compost when I planted it.